Reliability Engineering Consulting Break-Even: Month 9 Revenue Plan

Fixed costs $73.0K/mo Committed base

Contribution margin 75% After variable spend

Break-even revenue $97.3K/mo Needed monthly

Break-even timing Month 9 Crossover point

Break-even calculator

Test how monthly revenue, variable expenses, and fixed costs affect break-even for a reliability engineering consultancy.

Lean Base Full

Monthly revenue Revenue is the money in the door before direct project costs. $ Slower month Busy month Variable expenses Direct costs that rise with project revenue. $ Tight spend High spend

Money available to cover fixed costs $189,185 $241,000 revenue - $51,815 variable expenses

Margin ratio

78%

Covers fixed costs

Yes

Fixed monthly costs Monthly overhead the margin must cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which reliability consulting expenses are fixed, and which move with sales?

Cost classification

The break-even model is only reliable if fixed overhead stays separate from delivery spend. In the first year, revenue-linked delivery items equal 25% of revenue, while rent, insurance, core software, and committed salaries sit in fixed overhead.

Expense	Cost	Break-Even Treatment	Common Mistake
Engineering Office Rent	Fixed	Include $7,500 per month in fixed overhead from Month 1 through Month 60.	Flexing rent with revenue instead of treating it as committed space spend.
Professional Liability Insurance	Fixed	Include $1,800 per month in fixed overhead across the planning period.	Leaving it out until a claim risk appears, which understates break-even.
Core CAE Software Subscriptions	Fixed	Include $4,200 per month as base operating software needed before project volume scales.	Blending core subscriptions with project-specific seats and losing the fixed baseline.
Principal Reliability Engineer	Fixed	Treat the committed $185,000 annual salary as fixed before utilization is known.	Moving salary with billable hours after the hire is already committed.
External Laboratory Testing Fees	Variable	Model as 10% of first-year revenue, then apply the forecast percentage by year.	Budgeting lab work as a flat vendor fee instead of a delivery-linked charge.
Cloud Simulation Computational Power	Variable	Model as 5% of first-year revenue because usage rises with simulation work sold.	Treating compute spend like general IT overhead and overstating contribution margin.
Project Specific Software Seats	Variable	Model as 6% of first-year revenue because seats expand with signed project work.	Treating all software as Fixed when project seats scale with revenue.
Consultant Travel and Onsite Expenses	Variable	Model as 4% of first-year revenue, tied to onsite delivery and client work volume.	Spreading travel evenly across months instead of tying it to active projects.

How does break-even move from lean launch to base scale and full capacity for this reliability consultancy?

Scenario table

Lean launch stays below break-even, base scale clears it, and full capacity builds a wide cushion. The key swing factor is signed pipeline quality versus senior engineer utilization, because fixed payroll sets the floor.

Planning view only. These figures are model assumptions, not guarantees, and actual break-even will move with mix, staffing timing, and utilization.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch	$76k	$19k	$73k	75%	-$16k	Below break-even; revenue still needs lift.
Base scale	$241k	$52k	$132k	78.5%	$58k	Clears break-even, so the model has cushion.
Full capacity	$555k	$100k	$202k	82%	$253k	Well above break-even if utilization stays high.

What breaks the break-even plan for this reliability consulting firm?

Stress test

Year 2 is the first positive EBITDA base, but the cushion is still finite. Here’s the quick math: about $1.854M revenue and a 76.5% contribution margin cover roughly $1.094M of fixed cost, so break-even sits near $1.431M.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change from the Year 2 base.	$1,431k	$423k cushion	Year 2 clears break-even, but the cushion is only moderate.
Revenue shortfall	Revenue falls 10% from the Year 2 base.	$1,431k	$237k cushion	A sales miss still clears break-even, but it trims hiring room.
Fixed-cost pressure	Fixed costs rise 10% from the Year 2 base.	$1,574k	$281k cushion	Higher overhead makes new hires and tools harder to absorb.
Margin pressure	Variable expenses rise 5 points, cutting margin to 71.5%.	$1,532k	$322k cushion	Lab, travel, or software creep pushes break-even higher.
Combined pressure	Revenue falls 10%, variable expenses rise 5 points, and fixed costs rise 10%.	$1,684k	$15k gap	One more miss would push the plan into operating loss.

What should the founder verify before locking office space, senior hires, and major equipment spend?

Founder checklist

Don’t lock the lease or add senior staff until signed or near-signed work still supports Month 9 break-even. Keep the $464K cash floor in view, because this model only works if the pipeline, capex, and staffing ramp stay ahead of overhead.

1Signed pipelineMonth 9

Verify signed or near-signed projects can still carry the Month 9 break-even target before you commit to long-term overhead.

2Fixed load$18.7K/mo

Check that rent, insurance, software, IT, marketing, and admin really stay near $18.7K a month so the fixed bill does not outrun sales.

3Capex stage$240K

Stage the $240K of workstations, software, network, AV, kits, and website spend, and confirm lab, cloud, and insurance access before buying everything up front.

4Margin mix75%

At Year 1 rates, direct project costs run about 25% of revenue, so each billed dollar should keep about 75 cents to fund payroll and overhead.

5Capacity ramp45 hrs

Make sure the engineer bench can cover about 45 billable hours per active customer each month before you add the next hire.

6Launch demand≈12 starts

With a $65K Year 1 marketing budget and $5.5K CAC, the plan needs about 12 customer starts, so delay extra spend if the pipeline cannot support that pace.